Ci Medical Deep Λ (Lambda) Toothbrush for Orthodontics Regular I purchased this for orthodontic use, but I didn't use it and instead used something else. Unopened. Individually wrapped, 50 pieces. Purchase without comment is OK. If you have any concerns or would like to see close-up photos, please comment. When using Mercari delivery, I may open the box and put it in a Yu-Packet Plus envelope. Thank you for your understanding.